TobiasLj, the Anaerobic points for short sprints is not so much about HR values. I will show todays test results in a moment. Yes, I have 3D speed and distance enabled. Shouldn't I?

I used a paper Green Trails map which shows distance on different segments of trails. I know that isn't super accurate but wanted to show that even adjusted distance is still typically shorter than actual. In general all watches measure short on trails…

Hi Achim,
I cannot rely on "Amy", but it´s a normal approach to train slower on long training runs and faster in a few short intervals.

On a marathon you also don´t go for the full distance and pace before.

This might sound silly but you do intervals simply by running. Try to aim to get same feeling in each interval if you don’t have pacing.

Then depending on where you run you can pace your short intervals using distance eg lamp posts or you can go…

The VO₂Max figure is greatly influenced by the type of runs you do. It seems to favour my short faster runs (2 miles) over my longer distances at a more moderate pace.

I did a very demanding 5km run at the weekend on soft sand which will have caused my…

I've never had any reason not to trust my distance measurements, either. I had an oddity the other day where the watch was calculating my distance WAY short (showing 0.7 miles when I had actually gone 1.2 miles) for the first half of an activity, but…